Key posts: EXPERIMENTS! EEEERIIIIK, PLeaz DEESAAAART, pag 7 and 8
Substantial posts by timogiodeson, who started the thread, and by the forum’s most active contributors. 61 of 118 posts are listed.
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timogiodeson, 12 April 2008Hi, humans ear is an incredible gift, the threshold of hearing matches the softest sound possible in air, basically it can't be more sensitive and perfect than it is…
timogiodeson, 13 April 2008Yea... I do use some ear plugs or the headphones... The one you know reduce 20hz to 20khz? The one I have reduce only the highs I guess... It is more dangerous because…
timogiodeson, 13 April 2008Range of frequencies of the drums, below and above humans ear, a floor tom can go down at 30hz and the bass drum you can just feel it, drums with thin drum shells can…
timogiodeson, 13 April 2008Mmazurek, maybe my question was too vague .... the Experiment is: Treating the entire walls and ceiling (100% coverage) with a material that absorb only about 30% of the…
timogiodeson, 13 April 2008perhaps not perfectly uniformly at all frequencies.. but with an absorption coefficients curve similar to the reverberation time curve of the usual drywall/concrete…
xSpace, 13 April 2008You can fine tune this room all you will like, as perfect as you can get. Two things are always going to be in the way. You have no isolation on >your< side and you have…
Eric_Desart, 15 April 2008Timo, You said you liked experimenting. When I saw your pictures I must smile. That's hardly experimenting. Books help you to sort out your brain in a logical sequential…
timogiodeson, 15 April 2008Dear Eric, your presence it's important, I'm not done with my funny drummer story jet.. :) . Yes I also did many systematic experiments, then I stopped, because I was a…
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timogiodeson, 15 April 2008Ok Xspace I just removed the funny part it's OK like that? Yes!!! Slowing down !!! I totally agree! I strongly suggest to avoid such time and MIND consuming work I did.…
timogiodeson, 16 April 2008Man...Bloody bloody bloody ! I did it 3 times! you know, the foami peoples told me try this, try this, try this ... continue I filled up all my room and storage with all…
timogiodeson, 16 April 2008I was soo tired.... Then my friend called me and said : let's move my piano there! I said : Wow that's fantastic!... And .. half of the room was gone for ever! :cry:…
timogiodeson, 16 April 2008I forgot ....I built my room inside a two cars garage, a (confused drummer) triple leaf design..with a wall in front of the garage door, and 100% coverage of mineral…
timogiodeson, 16 April 2008and The density of the rigid mineral fiber is 0.61 x sqf. (the formula is 0.61 x 12 divided 5/8" thickness. the vendor said)" rigid 5/8"acoustic tile material. glued ,…
Eric_Desart, 17 April 2008Timo, Reading this stuff, and looking to all these pictures becomes chaotic. In fact there is no question in it, just some dispair of you. Hence do this more…
timogiodeson, 17 April 2008Isolation is not a problem, some how what I did works. So far not complaint from the neighbors. (probably the 3rd layer toward the room was not even necessary here. I…
timogiodeson, 17 April 2008Perhaps is not so simple... If you glue up the acoustic tiles directly to the walls, the absorption in the low end diminishes but the absorption from 500hz-1000hz…
xSpace, 19 April 2008So you had all these acoustic brains working over here: http://www.johnlsayers.com/phpBB2/viewt ... mogiodeson and came back under a different user name? This has been…
timogiodeson, 20 April 2008OK :cry: , Let's continue the story.... IMPORTANT QUESTION #1 Can this be a resonance of the last layer of drywall toward the room on the walls? My bad, I only glue up ,…
Eric_Desart, 20 April 2008Timo, First I can understand Brien a bit, since indeed the whole history feels a bit chaotic to me as well. If I see these sketches and pictures, I do have the feeling…
timogiodeson, 20 April 2008yes correct Same phone call :lol: I can ship to you if you like... Yes I have experimented a lot with rock wool 8 and 2.5 pounds absorbers, cavity filling etc.. In my…
Eric_Desart, 20 April 2008Please don't do that. This was my sentence ...... You knew exactly what I was saying en referring to. I did not quote Brien (there are tags for that), but referred to…
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timogiodeson, 20 April 2008here... Image not preserved: 20 to 500 all measured.jpg Image not preserved: 20 to 500 one third octave smoothing.jpg Image not preserved: all measured , auralex lenrds…
timogiodeson, 21 April 2008OK but Nooo..., In my room the size of the porous corner absorber need to be at list 4x8 to be effective in the very low end of the bass drum etc.....(too much space )…
timogiodeson, 21 April 2008Here the measurements. thank you P.S. I made a mistake in the description of of the last RT60 measurement above , (ligt green line) there was only two large 4x8 corner…
timogiodeson, 21 April 2008some of my experiments ... I measured various kind of floor to ceiling absorbers in the corner behind the drums, based on what I feel playing the bass drum and also the…
timogiodeson, 21 April 2008untreated corner External image, not preserved — original: http://www.johnlsayers.com/phpBB2/files/untreated_207.jpg External image, not preserved — original:…
timogiodeson, 22 April 2008I'm not sure .....Considering the price and everythings, I like the 4'x8'x 5/8" panel made with cheap ACOSUTIC :lol: ceiling tiles... $8.00 per corner!!! I can still…
timogiodeson, 23 April 2008Yes I did muflled a little the bass drum head etc trying to avoid resonances... was not perfect but Ok ... the rest of the room also with piano instruments etc is not…
timogiodeson, 23 April 2008Yes corner traps lower the RT60 , I'm sure about this! Please believe me! I'm an honest person , , I'm not a cheater, trust me please. it's not a joke, is very true, why…
gullfo, 23 April 2008sorry for being so late... Eric - i had built some large corner staddling polys which did a nice job of absorption and diffusion - we had them lined with 4" mineral wool…
timogiodeson, 24 April 2008It's OK X, thanks. ------------------------------------------------------ OK too All, I admit it, I'm depressed and obsessed, I'm chaotic and illiterate, and on top of…
timogiodeson, 25 April 2008Thank you Mr. Noxon, Drums are too loud, but I love to play my drums in big churches, stages etc., I guess it's not only the intensity of the direct sound... Outside my…
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timogiodeson, 25 April 2008Ops..Sorry , I'm kind of illiterate... :oops: Here how LOUD my drums are inside my room I have a Radio Shack Digital Sound Level Meter.... Of course I don't play this…
Eric_Desart, 26 April 20081) It depends also on age. Normal hearing situates between -10 and 20. Your audiograms shows you have to take care. http://en.wikipedia.org/wiki/Audiogram 2) Such a…
timogiodeson, 27 April 2008Yes I will. Sound great.. 4 inc black flat soft dense foam and a metal burlap in front!!! You see? How confusing for me? ... I don't even trust my own EQ Wizard…
Eric_Desart, 27 April 2008Timo Was that measured in Slow or Fast? (setting in SLM) What you need is an averaged (all boundaries) flat absorption around 30, max 35%, whatever RT follows from that.…
timogiodeson, 27 April 2008All , slow and fast, average etc... I measured in various ways to make sure, playing with different techniques , continuously etc.. Those numbers can vary of 2 or 3 dB's…
Eric_Desart, 28 April 2008No I meant it in the Sabine like average. Getting an average of 30% over all boundaries should mean you have to include the floor as well. What I meant is that, as a…
timogiodeson, 29 April 2008Thanks Claudio, I grow up In Europe rehearsing in garages made with Eggs cartons and Polystyrene, everybody did that, and I have good memory about it! I never complained…
timogiodeson, 29 April 2008Eric, thank you very much for your help, I know must be very difficult and energy consuming for you, every time you answer you write a book! You are very generous .…
timogiodeson, 29 April 2008Project started , reducing drums SPL first! some new measurements , Instead placing the sub woofer in one corner and the mic in the opposite corner I decided to measure…
timogiodeson, 29 April 2008pictures sub and spaker simulate drum set sm..JPG 20 lenrds only.JPG 8 pounds in front of lenrds.JPG 8 pounds floor to ceiling , plus 20 Lenrds walls ceiling c..JPG
Eric_Desart, 29 April 2008Timo, :mrgreen: You must be the most persistant guy on the face of this earth. :) I think this is somehow a very positive quality , but scary and tiring for the rest of…
timogiodeson, 29 April 2008OK, 1) I did the measurements one after another all saved in the same file, they appear already combined in the "all measured" window that I use to save as image…
Eric_Desart, 29 April 2008Timo, Stupid question. Since you did the calibration, which is good: Can you add a measurement of your empty room? Due to the small differences I have the feeling that…
Eric_Desart, 29 April 2008Timo Here you find the comparison between just panels, the chuncks and the MegaLENRDs (Auralex) http://forum.studiotips.com/viewtopic.php?t=536 The PANELS and CHUNKS are…
timogiodeson, 29 April 2008thanks Eric, I need few hours to take some more measurements including the empty room, of course for empty I mean I will remove all the acoustical material accept the…
timogiodeson, 30 April 2008NEW MEASUREMENTS BEGIN HERE I just completed all the new measurements, I re calibrated, removed some stuff from the room, studied the help file again etc... everything…
timogiodeson, 30 April 2008... 100 to 700hz 16 Lenrds floor to ceiling in each vertical cornerl.jpg 100 to 700Hz , 8 pounds, floor to ceiling in all 4 vertical corners.jpg Image not preserved: 100…
timogiodeson, 30 April 2008... 700 to 5k , 8 pounds only.jpg 700 to 5k, 8 pounds with lenrds behind.jpg 700 to 5 k , 8 pounds in all 4 verticaL corners plus 16 lenrds in horizontal ceiling walls…
timogiodeson, 1 May 2008Trying to avoid those modes maybe I will end up absorbing to much important frequencies for the acoustic instruments... Also the peaks and nulls don't just disappear,…
timogiodeson, 1 May 2008.. Image not preserved: empty room 20-20, 1-3 octave smoothing.jpg empty room 8.00k to 20k.jpg empty room 20-20.jpg
timogiodeson, 2 May 2008A closer look of the measurements all together, up to about 1K P.S. All these new measurements begin on page 7 , post #8 counting down from the top of the page) info's…
timogiodeson, 2 May 2008... all measured , closr look , 620hz to 740 hz.jpg all measured , closer look, 740hz to 860hz.jpg all measured, closer look , 860hz to 980 hz.jpg all measured, closer…
timogiodeson, 2 May 2008... all measured , closer look , 1.58k to 1.81k.jpg all measured, closer look , 1.80k to 2.03k.jpg
timogiodeson, 2 May 2008Not problem Eric, All the new measurements including the empty room start from page 7 , (post #8 counting down from the top of the page)with all the info etc... How? I…
timogiodeson, 3 May 2008OK Jean, look on top of this page, the measurement 20hz to 140hz for example...or below. look what happens to 78hz just by adding Lenrds behind the 8 pound panels...…
timogiodeson, 6 May 2008Thanks Jean, :D It's not better to leave them cancel out and appear Normal and forget about them? hey...maybe I'm just lucky... that's explain why I like the the empty…
timogiodeson, 7 May 2008With acoustic treatment in all 4 corners floor to ceiling 20 to 940hz, grey line =empty room, olive line =lenrds floor to ceiling.jpg 940 to 4.69khz, grey = empty room,…
Soundman2020, 7 March 2013I only just noticed this thread while I was looking for something else. Astounding what happened here. So much intention, persistence, and effort, yet so much…